Power unit



Oct. 20, 1936. F. H. POOR Re. 20,140

- POWER UNIT Original Filed Dec'. 19, 1928 2 Sheets-Sheet 1 17 .5 J i 47 j l 26 g 44 7g. E-w n w 25" 4 r-L @21 '5 m 4/ g 35 an 1/ kg 1 40 5 2- I llll II VIIIIIIIIIIIIIIIIII/IIIIIL2' IN V EN TOR.

ivf ATTORNEY F. H. POOR Oct. 20, 1936.

POWER UNIT Original Filed Dec. 19, 1928 2 Sheets-Sheet 2 Mm? zffm INVENTOR.

ATTORNEY.

' sta ues 0...: 20.1936

PATENT OFFICE Frederic H. Poor, deceased, late Yonkers, N. Y I

by Bucyrns-Erie Company, W, South ml.- waukee, Wis, a corporation of Delawu'e 1 Original No. 1,911,485. May 30, 1983, Serial No. 326,930, December 19, 1928. Application for reissue May 29, 1935, Serial'No. 23,978

8 Claims. (01. 18M!) The present invention relates to mobile power units and more particularly is directed to tractors which may be equipped with a crane or ;other hoisting machinery, one of the objects of the invention being an improved machine of the character indicated wherein the mounting of the crane frame as well as the engine frame on the axles of the unit has been improved as compared with existing power units f the same general type, the improved mountin of this invention being of such a character that the usual tractor, i. e., a power unit equipped with its own propulsion mechanism may be readily converted into a hoisting machine for example, it being understood of course that after being so changed over the machine is stillcapable of use as a tractor for the purpose of drawing a trailer. or other apparatus from one point to another.

In the drawings accompanying thisapplication,

v Fig. 1 shows an embodiment of the present invention in front elevation and partly in section; Fig. 2 'is a section on the line 2-2 of Fig. l; and A I x, Fig; 3 a section on the-linel-l of Fig. 1.

Fig. 4 is a side elevation of my invention showing both axles of the mobile power unit of my invention, with the associated parts of my craneframe. 6 Fig. 5 is an, enlarged detailed side elevation partly in section of the stabilizer l2 of Figure 4.

Referring to the drawings in detail, the present invention provides a machine to be termed throughout this description and throughout the appended claims as a tractor crane, including a traction base embodying front and. rear axles, a crane framesupported thereon in a manner to be hereinafter referred to in detail, and an engine and engine frame.

. The crane frame will comprise, for instance, a

.a hoisting crane with the necessary apparatus for operating the same. Inasmuch as the construction of the crane and of the propulsion mechanism, etc. forms no part of the present invention the same will not-be described in detail herein.

In the specification, and claims. the terms "tractor crane and crane frame" will be employed illustratively, rather than restrictively, and

- shall be taken to cover broadly any similar auxiliary equipment, other than cranes strictly J speaking. As is obviousfrorn an i lp on of Fig.

l, the word "axlefi as applied to my invention does not mean a transverse memberthe ends of a which are machined to serve; as bearings for bers 2-2 running from the front of the machine' rearwardly to or adjacent the rear axle I8 10 to which theyare attached. Within the space defined by the side members 2-2 of the crane frame are crane frame members 3-3 which may ,be, for instance, in the form of channels extending vertically as shown in Figs.. 1 and 4. 15 The mounting of the crane frame, and the 'mounting'of the engine frame, both considered with respect to the axle i, are the prime features of the present invention.

An inspection of Fig. 1 will show that 4 .desig- 20 nates a bolster extending transversely of the traction base, and provided with a rearwardly extending bifurcated portion 5 straddling the leaf spring 8,.this. spring also extending trans-' versely of the machine and being attached by 25 suitable links at the ends of the spring to the also has a forwardly extending portion 8 over- 30 lying the axle I as shown in Fig. 3 and extending a short distance in front thereof. That portion of the bolster immediately overlying the axle is provided with a buffer iii of rubber, for example. a i

35 The bolster extends laterally as viewed in Fig. i

from that portion which straddles the spring to and beneath the side frames 2 of the crane frame to engage and support the same.

The side members lof the crane frame are 40 rigidly secured to the members 2 as by bolts H. Y The members 2 are Joined together by the crossmember II, as shown in Figure 3, this cross-memher-serving not only to stiffen the crane frame laterally, but also to serve as a front bumper. 5

. Engine frame H is secured to the bolster 4 by three centrally located bolts I, which are spaced so closely together as to constitute practically a single point of support. Thus both the crane frame and the engine frame are supported on the so bolster l which as above explained finds its supf port on the spring ,0. As above pointed out the side members 2 ofthe crane frame of the machine extend rearwardly to the rear axle I. to be supported thereby in any fashion, and since 'anlnewill '-1.Inntnctorcnne,the

.nxlefnndn holster theenzine trnme ileupml'bd conventionnlmnnnerontherenrnxlemndinthe tmntontheenmeholaterthntmpportsthe beldlOflletthdthB'MMtflMilM reu' ale, thelprinl these devices constitute the subject patter co-pendln: Patent No; 1,015,110, issued Oct. 3. 1934, to the unllneeot the present applicant. the

detoll.

scope conktitute one 01' the elements ot the com- .hin'ntion to heelnlmed herein. the 1m!!! belaidof'them.

pewllhtoehm theeeteethkmpewlm' hemutilatedlnnnyeonvenleui;mannernah eprlnl 22. lever II. and rod II. Bolt ll rune inn guide ",tokeeptheplunger ll tromtm'nlnl.

From this brief deecrlptlon it is evident that, nlthoughmycrnneisnormnllynmtedntthree points (namely. the two renrulee IO; nnd. throuzh its dependence onthe-endnmtheeenter of 4); yet.,hy locking the etthlllners.

.myc'rnneia mpportehle-nt-two trait points- (nI-mely. at theenda otthe holster], by the two stahilinersLendhencethushastheoptiomltourpoint mounting, which; an claiming no one ol the principal tentureeot my invention.

It lsevident -mndeinthe-const1'.uetlonnhovedeecrihenwlthin thepurviewotthlainvention.

whntleelnime'disz I p run 1; I ll l of: trnction base, including hunt and ten:- ales. n spring supported adjacent it: ends hy the 'tront' mpported-ndjncent its-center hythesprinmnndntwillnttwowidelyeepnnted pointshythen'ontnfleinctnnefnmempported jnt' two eepnnted point-on snid hotter:

adlneent the eentero! Irnmeebelnemounteddepehdentlyoteaehoiher.

2.1natnctorcrnnmtheeunhimtionbt: n

inaction h aeepn crane frame: in .ensine name,

I I 00,30: etthelenrin-the T Illd nothe'i-eienedtoinnnyveqn'at;

with

teched; nude theholster to thenpringnt n polntlntennedinte the endeothoth; dcrnnen-emenmportedon the ml. n H. d;

rearwudlstoetnddlethem'ln'lattherennot thenxlqnndmeenntornttnchinzfllehiturcnted projectlnnofthehollta'tothem'ing V 4.Inntnctorcnne,the-eomhinnt iono!:.a trnnevereelyextendinlholstenntnnsvenelyen tending mung: nnnxletowhich the utreimtiel otthesprinsuentt'nehedz-means tor'nttniehin:

8. In tractor crnne.-the.eomhinntion o t:

supportedndieeenttheeenter oi'snidhae: snidtwottnmeeheinzmolmted pendentlyotenehother;

tremedetnchnblemennseecurinznidauxfllm 'BpUYRUB-IBIIOOEPANY, moflrederte H.

-ByG.A; uomaommviwrmm 

